US20060169524A1 - Steering-column assembly - Google Patents

Steering-column assembly Download PDF

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Publication number
US20060169524A1
US20060169524A1 US10/539,607 US53960703A US2006169524A1 US 20060169524 A1 US20060169524 A1 US 20060169524A1 US 53960703 A US53960703 A US 53960703A US 2006169524 A1 US2006169524 A1 US 2006169524A1
Authority
US
United States
Prior art keywords
spindle
telescopic
gear mechanism
down gear
casing tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/539,607
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English (en)
Inventor
Christian Born
Hans-Joachim Hurschler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Assigned to DAIMLERCHRYSLER AG reassignment DAIMLERCHRYSLER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BORN, CHRISTIAN, HURSCHLER, HANS-JOACHIM
Publication of US20060169524A1 publication Critical patent/US20060169524A1/en
Assigned to DAIMLER AG reassignment DAIMLER AG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: DAIMLERCHRYSLER AG
Assigned to DAIMLER AG reassignment DAIMLER AG CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NO. 10/567,810 PREVIOUSLY RECORDED ON REEL 020976 FRAME 0889. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Assignors: DAIMLERCHRYSLER AG
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/181—Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible

Definitions

  • the invention relates to a steering-column assembly for a motor vehicle, having an outer casing tube, a telescopic inner casing tube and a telescopic drive having a spindle nut, a telescopic spindle which is fastened to the inner casing tube via a crash element, and a telescopic motor having a step-down gear mechanism.
  • DE 198 12 179 C1 has already disclosed a steering-column assembly for a motor vehicle, having an outer casing tube which is arranged in a fixed position, and having an inner casing tube which can be displaced telescopically in the outer casing tube, and having an adjusting apparatus which acts between the two casing tubes in order to displace the inner casing tube.
  • the steering-column assembly has an actuator which acts on the inner casing tube, extends longitudinally and is oriented axially parallel to the longitudinal axis, the actuator being assigned energy absorption means.
  • the invention is based on the object of configuring and arranging a steering-column assembly in such a way that the amount of crash energy which can be absorbed is increased, the steering-column assembly is acoustically decoupled from the vehicle body, and the installation space is reduced.
  • the object is achieved by the fact that the crash element is of at least partially hollow configuration and accommodates the spindle nut.
  • a solution for rotation of the telescopic spindle is provided which, compared with the conventional drive of a spindle nut, forms a simple drive, as the telescopic spindle is driven via one of its end sides.
  • the relatively simple drive of the telescopic spindle provides the possibility of acoustically decoupling the telescopic drive, which will be explained in the following text.
  • the crash element is formed by a sleeve and a pin which is positioned coaxially with respect to the sleeve, is at least partially inserted into the sleeve at one end side of the sleeve and is fastened to the sleeve.
  • This construction makes it possible to accommodate the spindle nut and has the property that, in the event of a collision, the crash element collapses into itself and absorbs a portion of the crash energy which acts on the steering-column assembly, or converts it into thermal and deformation energy.
  • the crash element which in practice extends the telescopic spindle is formed by a material which is simple compared with the spindle.
  • the manufacture of the telescopic spindle does not require thermal treatment or any other treatment which is required for spindles.
  • a further possibility is that the telescopic spindle is connected via a flexible drive shaft to an output shaft of the step-down gear mechanism, the opposite side of the telescopic spindle from the spindle nut being mounted rotatably in a bearing block which is structurally separate from the step-down gear mechanism.
  • the solution of a simple drive of the telescopic spindle makes it possible firstly to mechanically and thus acoustically decouple the steering-column assembly. Most of the noise during displacement of the steering-column assembly is transmitted by structure-borne sound.
  • the assembly can be acoustically decoupled by introducing a flexible drive shaft as intermediate shaft between the telescopic spindle and the output shaft of the step-down gear mechanism.
  • the substantial part of the structure-borne sound is formed by the drive unit, comprising the motor and step-down gear mechanism.
  • Polymer plastic or rubber is used for acoustic decoupling.
  • the use of plastic assumes mechanical decoupling, because the operational loading is too high for plastic bearings and shafts.
  • the problem of mechanical decoupling is solved by the bearing block which is fastened to the body of the motor vehicle or to the outer casing tube.
  • the outer casing tube is pivotable about a y-axis by a pivot drive which has a spindle nut, a spindle and a flexible drive shaft, the spindle being connected via the flexible drive shaft to an output shaft of a step-down gear mechanism, and the opposite side of the spindle from the spindle nut being mounted rotatably in a bearing block which is structurally separate from the step-down gear mechanism.
  • a second motor which drives the step-down gear mechanism is provided as a pivoting motor.
  • the solution which is used with regard to the telescopic spindle affords the additional advantage, for pivoting the outer casing tube, that the flexible drive shaft for transmitting a torque can also be bent or curved.
  • the spindle is also pivoted by virtue of the drive unit being fixed to the vehicle body.
  • the longitudinal axis of the spindle and the rotational axis of the output shaft of the step-down gear mechanism, which output shaft is connected directly to the flexible drive shaft enclose an angle between 135° and 180°.
  • the drive shaft for transmitting a torque is of correspondingly flexible configuration.
  • the flexible drive shafts within the steering-column assembly differ with regard to their lengths and with regard to their torsional properties, because the torques which are to be transmitted for telescoping or pivoting are of different magnitude.
  • the tensile and compressive forces which are produced during pivoting of the outer casing tube in the direction of a longitudinal axis of the spindle are passed directly from the spindle to a part of the vehicle body via the bearing block.
  • the end result is that the telescopic motor and the step-down gear mechanism are partially mechanically decoupled from the telescopic spindle and are loaded only by a torque.
  • the spindle nut which engages with the telescopic spindle or with the spindle and the flexible drive shaft which is connected to the telescopic spindle or the spindle are formed at least partially from plastic.
  • the flexible drive shaft which is formed as an intermediate shaft for the pure transmission of a torque is formed at least partially from plastic or from another material which is advantageous with regard to acoustic decoupling.
  • a very good solution principle is found in the area of components which are formed from a plurality of different materials.
  • the flexibility of the drive shaft is increased by the plastic and, above all, the transmission of vibrations and thus the development of noise are reduced.
  • This also advantageously has an effect in a spindle nut which is formed from plastic and additionally has improved self-lubrication properties.
  • the flexible drive shaft is mounted in the bearing block in a manner which is connected on the output side to the telescopic spindle or to the spindle, and is mounted in the step-down gear mechanism in a manner which is connected on the input side to the output shaft.
  • the remaining part of the flexible drive shaft lies free, in order that bending is made possible without disturbances.
  • the bearings of the flexible drive shaft within the step-down gear mechanism and within the bearing block are lubricated and sealed appropriately with regard to the rest of the drive shaft.
  • the bearings of the flexible drive shaft are made from metal and are fastened as a conventional shaft end to the plastic regions.
  • the step-down gear mechanism and/or the motor are/is mounted on the vehicle body by a bearing which is formed at least partially from plastic. Not only the flexible drive shaft but also the bearing of the drive unit therefore contribute to the acoustic decoupling with regard to the vehicle body.
  • the structure-borne sound which is still passed into the drive unit, that is to say into the step-down gear mechanism and into the motor, despite the flexible drive shaft is dissipated or damped by the plastic bearings.
  • FIG. 1 shows a perspective view of a steering-column assembly
  • FIG. 2 shows a sectional view of a crash element.
  • FIG. 1 shows a perspective view of a steering-column assembly 1 .
  • the head 1 . 1 is adjoined by a steering wheel (not shown).
  • the right-hand side is adjoined by a steering mechanism (not shown).
  • An inner casing tube 2 . 1 transmits the rotational movement from the steering wheel to an outer casing tube 2 which adjoins the steering mechanism by way of a claw 3 .
  • the inner casing tube 2 . 1 can be telescoped or displaced into the outer casing tube 2 .
  • a crash element 4 is attached to the inner casing tube 2 . 1 .
  • the crash element 4 has a sleeve 4 . 1 and a pin 4 . 2 .
  • the pin 4 . 2 is inserted into the sleeve 4 . 1 and is connected to the latter by a clamping connection.
  • the crash element 4 is fastened to the inner casing tube 2 . 1 using the pin 4 . 2 .
  • a spindle nut 5 . 6 is introduced into the sleeve 4 . 1 on the opposite side of the crash element 4 .
  • One side of the telescopic spindle 5 . 1 reaches into the spindle nut 5 . 6 .
  • the opposite side of the telescopic spindle 5 . 1 is mounted rotatably in a bearing block 5 . 5 .
  • the crash element 4 and thus the inner casing tube 2 . 1 is moved in the direction of the longitudinal axis x by rotating the telescopic spindle 5 . 1 .
  • the steering-column assembly 1 is thus telescoped.
  • the telescopic spindle 5 . 1 is fixed in position by the bearing block 5 . 5 , above all, in the direction of the longitudinal axis x.
  • the bearing block 5 . 5 is fastened to a bracket 8 which transmits the bearing forces to a part of the vehicle body.
  • the telescopic spindle 5 . 1 is driven by a flexible drive shaft 5 . 4 , with which the telescopic spindle 5 . 1 is operatively connected within the bearing block 5 . 5 .
  • the flexible drive shaft 5 . 4 transmits a drive moment from a drive unit.
  • the drive unit is formed from a telescopic motor 5 . 2 and a step-down gear mechanism 5 . 3 .
  • An output shaft (not visible) having a rotational axis a is arranged within the step-down gear mechanism 5 . 3 .
  • the output shaft is connected directly to the flexible drive shaft 5 . 4 .
  • the drive unit or the step-down gear mechanism 5 . 3 is mounted on the outer casing tube 2 via a plurality of bearings 5 . 7 , 5 . 7 ′.
  • the flexible drive shaft 5 . 4 transmits only a torque, as a result of the mechanical decoupling of the tensile and compressive forces from the drive unit.
  • the spindle nut 5 . 6 and the bearings 5 . 7 , 5 . 7 ′ are additionally formed from plastic.
  • the outer casing tube 2 is mounted via a claw 3 so as to be pivotable about a y-axis.
  • Lever kinematics 7 are attached to the outer casing tube 2 for pivoting purposes, the said lever kinematics 7 accommodating a spindle nut 6 . 6 .
  • a spindle 6 . 1 engages into the spindle nut 6 . 6 , which spindle 6 . 1 is mounted so as to be rotatable in the direction of the longitudinal axis x′ with respect to the spindle nut 6 . 6 , in a bearing block 6 . 5 perpendicularly with respect to the longitudinal axis x′.
  • the bearing block 6 . 5 is mounted rotatably on the bracket 8 .
  • the spindle 6 . 1 pivots about the bearing axis 1 of the bearing block 6 . 5 .
  • the spindle 6 . 1 is driven via a flexible drive shaft 6 . 4 which is in turn driven by an output shaft (not visible) of a step-down gear mechanism 6 . 3 .
  • the flexible drive shaft 6 . 4 is bent as the outer casing tube 2 is pivoted.
  • the longitudinal axis x′ of the spindle 6 . 1 encloses an angle ⁇ of 135° with the rotational axis a′ of the output shaft.
  • the drive unit which comprises the pivoting motor 6 . 2 and the step-down gear mechanism 6 . 3 is mechanically decoupled by this arrangement of the pivot drive 6 by the tensile and compressive forces which act in the direction of the longitudinal axis x′.
  • the flexible drive shaft 6 . 4 which is formed partially from plastic acts as an acoustic decoupling means.
  • the acoustic decoupling is enhanced by the fact that the bearings 6 . 7 , 6 . 7 ′ of the drive unit and the spindle nut 6 . 6 are also formed from plastic.
  • the flexible drive shaft 5 . 4 is likewise bent during pivoting of the outer casing tube 2 as a result of the articulation of the bearing block 5 . 5 for the telescopic spindle 5 . 1 on the bracket 8 .
  • the use of a flexible drive shaft 5 . 4 , 6 . 4 is made possible by the mechanical decoupling of the tensile and compressive forces.
  • the decoupling of the tensile and compressive forces from the torques is made possible by fixing the spindle nuts 5 . 6 , 6 . 6 and rotating the spindles 5 . 1 , 6 . 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)
US10/539,607 2002-12-19 2003-11-13 Steering-column assembly Abandoned US20060169524A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10259596A DE10259596B3 (de) 2002-12-19 2002-12-19 Lenksäulenanordnung
DE10259596.8 2002-12-19
PCT/EP2003/012684 WO2004056637A1 (de) 2002-12-19 2003-11-13 Lenksäulenanordnung

Publications (1)

Publication Number Publication Date
US20060169524A1 true US20060169524A1 (en) 2006-08-03

Family

ID=32103468

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/539,607 Abandoned US20060169524A1 (en) 2002-12-19 2003-11-13 Steering-column assembly

Country Status (5)

Country Link
US (1) US20060169524A1 (https=)
EP (1) EP1572520A1 (https=)
JP (1) JP4202325B2 (https=)
DE (1) DE10259596B3 (https=)
WO (1) WO2004056637A1 (https=)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080314188A1 (en) * 2007-06-22 2008-12-25 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Steering Column Arrangement For A Motor Vehicle
US20140182136A1 (en) * 2012-12-31 2014-07-03 Spectrum Brands, Inc. Drive Component For Electric Shaver
CN111511628A (zh) * 2017-12-20 2020-08-07 蒂森克虏伯普利斯坦股份公司 用于机动车辆的可马达调节的转向柱
CN111565995A (zh) * 2017-12-20 2020-08-21 蒂森克虏伯普利斯坦股份公司 用于机动车辆的马达可调式转向柱
CN113272163A (zh) * 2019-02-04 2021-08-17 大陆-特韦斯贸易合伙股份公司及两合公司 用于固定具有声学解耦功能的空气弹簧的装置
US11479288B2 (en) * 2018-02-13 2022-10-25 Thyssenkrupp Presta Ag Steering column for a motor vehicle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007030527A (ja) 2005-02-17 2007-02-08 Nsk Ltd ステアリングホイールの電動式位置調節装置
JP2008087582A (ja) * 2006-09-29 2008-04-17 Nsk Ltd 電動テレスコ調整式ステアリング装置
DE102011083190A1 (de) * 2011-09-15 2013-03-21 Zf Lenksysteme Nacam Gmbh Kraftfahrzeuglenksäule mit Energieabsorber
DE102019212435A1 (de) 2019-08-20 2021-02-25 Thyssenkrupp Ag Lenksäule für ein Kraftfahrzeug
DE102021212039A1 (de) 2021-10-26 2023-04-27 Thyssenkrupp Ag Lenksäule für ein Kraftfahrzeug
DE102022110314A1 (de) * 2022-04-28 2023-11-02 Schaeffler Technologies AG & Co. KG Bedieneinheit zur Beeinflussung einer Fahrrichtung eines Kraftfahrzeugs durch einen Benutzer

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785684A (en) * 1986-09-30 1988-11-22 Aisin Seiki Kabushiki Kaisha Vehicle steering mechanism
US4934737A (en) * 1987-10-27 1990-06-19 Mazda Motor Corporation Power tiltable steering wheel
US5163337A (en) * 1989-09-05 1992-11-17 Ultra-Precision Manufacturing, Ltd. Automatic steering wheel pivoting mechanism
US5178411A (en) * 1990-06-07 1993-01-12 Nacam Device for adjusting the position of an adjustable steering column
US5520416A (en) * 1994-10-03 1996-05-28 Ford Motor Company Power tilt, telescoping and internally collapsible steering column
US5690362A (en) * 1995-07-03 1997-11-25 Mercedes-Benz Ag Longitudinal adjusting arrangement on a casing tube telescope of a steering spindle in a motor vehicle
US5820163A (en) * 1996-07-08 1998-10-13 Ford Global Technologies, Inc. Tilting, telescoping and energy absorbing steering column
US5911789A (en) * 1997-08-13 1999-06-15 General Motors Corporation Linear actuator for motor vehicle steering column
US6142523A (en) * 1997-12-23 2000-11-07 Mannesmann Vdo Ag Steering spindle provided for mounting on a body part of a motor vehicle
US6264239B1 (en) * 1998-03-19 2001-07-24 Daimler Chrysler Ag Steering column arrangement for a motor vehicle
US7293481B2 (en) * 2004-03-11 2007-11-13 Delphi Technologies, Inc. Single-motor power telescope and tilt steering column
US7350814B2 (en) * 2004-02-10 2008-04-01 Namyang Ind. Co., Ltd. Tilt-telescopic apparatus for steering system
US7410190B2 (en) * 2005-02-17 2008-08-12 Nsk Ltd. Motor-driven position adjustment apparatus for steering wheel

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4785684A (en) * 1986-09-30 1988-11-22 Aisin Seiki Kabushiki Kaisha Vehicle steering mechanism
US4934737A (en) * 1987-10-27 1990-06-19 Mazda Motor Corporation Power tiltable steering wheel
US5163337A (en) * 1989-09-05 1992-11-17 Ultra-Precision Manufacturing, Ltd. Automatic steering wheel pivoting mechanism
US5178411A (en) * 1990-06-07 1993-01-12 Nacam Device for adjusting the position of an adjustable steering column
US5520416A (en) * 1994-10-03 1996-05-28 Ford Motor Company Power tilt, telescoping and internally collapsible steering column
US5690362A (en) * 1995-07-03 1997-11-25 Mercedes-Benz Ag Longitudinal adjusting arrangement on a casing tube telescope of a steering spindle in a motor vehicle
US5820163A (en) * 1996-07-08 1998-10-13 Ford Global Technologies, Inc. Tilting, telescoping and energy absorbing steering column
US5911789A (en) * 1997-08-13 1999-06-15 General Motors Corporation Linear actuator for motor vehicle steering column
US6142523A (en) * 1997-12-23 2000-11-07 Mannesmann Vdo Ag Steering spindle provided for mounting on a body part of a motor vehicle
US6264239B1 (en) * 1998-03-19 2001-07-24 Daimler Chrysler Ag Steering column arrangement for a motor vehicle
US7350814B2 (en) * 2004-02-10 2008-04-01 Namyang Ind. Co., Ltd. Tilt-telescopic apparatus for steering system
US7293481B2 (en) * 2004-03-11 2007-11-13 Delphi Technologies, Inc. Single-motor power telescope and tilt steering column
US7410190B2 (en) * 2005-02-17 2008-08-12 Nsk Ltd. Motor-driven position adjustment apparatus for steering wheel

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080314188A1 (en) * 2007-06-22 2008-12-25 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Steering Column Arrangement For A Motor Vehicle
US8281684B2 (en) * 2007-06-22 2012-10-09 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Steering column arrangement for a motor vehicle
US20140182136A1 (en) * 2012-12-31 2014-07-03 Spectrum Brands, Inc. Drive Component For Electric Shaver
US9266246B2 (en) * 2012-12-31 2016-02-23 Spectrum Brands, Inc. Drive component for electric shaver
CN111511628A (zh) * 2017-12-20 2020-08-07 蒂森克虏伯普利斯坦股份公司 用于机动车辆的可马达调节的转向柱
CN111565995A (zh) * 2017-12-20 2020-08-21 蒂森克虏伯普利斯坦股份公司 用于机动车辆的马达可调式转向柱
US11173944B2 (en) 2017-12-20 2021-11-16 Thyssenkrupp Presta Ag Motor-adjustable steering column for a motor vehicle
US11247714B2 (en) * 2017-12-20 2022-02-15 Thyssenkrupp Presta Ag Motor-adjustable steering column for a motor vehicle
US11479288B2 (en) * 2018-02-13 2022-10-25 Thyssenkrupp Presta Ag Steering column for a motor vehicle
CN113272163A (zh) * 2019-02-04 2021-08-17 大陆-特韦斯贸易合伙股份公司及两合公司 用于固定具有声学解耦功能的空气弹簧的装置
US11827066B2 (en) 2019-02-04 2023-11-28 Continental Teves Ag & Co. Ohg Device for securing a pneumatic spring with an acoustic decoupling function

Also Published As

Publication number Publication date
JP2006510527A (ja) 2006-03-30
JP4202325B2 (ja) 2008-12-24
DE10259596B3 (de) 2004-05-13
WO2004056637A1 (de) 2004-07-08
EP1572520A1 (de) 2005-09-14

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Legal Events

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AS Assignment

Owner name: DAIMLERCHRYSLER AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BORN, CHRISTIAN;HURSCHLER, HANS-JOACHIM;REEL/FRAME:017516/0905

Effective date: 20051104

AS Assignment

Owner name: DAIMLER AG, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:DAIMLERCHRYSLER AG;REEL/FRAME:020976/0889

Effective date: 20071019

Owner name: DAIMLER AG,GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:DAIMLERCHRYSLER AG;REEL/FRAME:020976/0889

Effective date: 20071019

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: DAIMLER AG, GERMANY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NO. 10/567,810 PREVIOUSLY RECORDED ON REEL 020976 FRAME 0889. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME;ASSIGNOR:DAIMLERCHRYSLER AG;REEL/FRAME:053583/0493

Effective date: 20071019